NCT06538948Recruiting
Direct Measurement of Ingestive Behaviour in Relation to Sex Differences and Gastrointestinal Hormone Levels in Patients After Metabolic and Bariatric Surgery
Source: ClinicalTrials.gov · Last updated 18 May 2026
Brief summary (registry, in English)
Bariatric surgery (BS), especially procedures like Sleeve Gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), is the most effective treatment for obesity. Yet, the exact mechanisms governing its effect are somewhat elusive, with current research mainly focusing on post-operative food intake outcomes based on self-reported data, which might not fully capture the nuanced changes in eating behaviours. To address these gaps, our study plans to employ the newly developed "drinkometer", a device capable of analysing the intricate changes in drinking behaviour following BS. This tool promises to bring a more detailed perspective to the changes in ingestive behaviours, bypassing the inaccuracies of self-reporting methods. By expanding our research to encompass diverse patient demographics and examining potential links to physiological shifts like gut hormone level alterations, the study aims to provide a more rounded understanding of the long-term impacts of BS on eating behaviours.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 420 (estimated)
- First submitted
- 25 Jul 2024
- Start date
- 13 Feb 2024
- Primary completion date
- 31 Aug 2027
- Lead sponsor
- University of Zurich
- Diseases
- Obesity
- NCT number
- NCT06538948
What you commit to
- Study type: Observational
- Planned participants: 420
- From 13 Feb 2024 to the primary completion date, 31 Aug 2027
- 2 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- history of previous bariatric operations and/ or revisional surgery (e.g., alteration of limb lengths after primary RYGB),
Other illness
- established diagnosis of type 1 or 2 diabetes mellitus, and
- polycystic ovary syndrome (PCOS).
Other
- smoking,
Who the study is looking for
- Age ≥ 18 year
- BMI ≥ 35 kg/m2 for patients with planned RYGB or SG operation
- BMI ≥ 30 kg/m2 for external controls affected by obesity but no planned RYGB or SG within the next 12 months, and
- BMI ≥ 18.5 kg/m2 and ≤ 24.9 kg/m2 for controls without obesity.
Age in the registry: 18 years to - · Sex: All · Accepts healthy volunteers
Sites (2)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Hospital Männedorf Coordinator of this site? Confirm its status | Männedorf | Switzerland | Recruiting |
| University Hospital Zurich, Department of Surgery and Transplantation Coordinator of this site? Confirm its status | Zurich | Switzerland | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.